Go to Top Go to Bottom
Asian-Australas J Anim Sci > Volume 8(3); 1995 > Article
Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 1995;8(3): 255-261.
DOI: https://doi.org/10.5713/ajas.1995.255    Published online June 1, 1995.
Effects of age and sex on body composition of Thai native and cross-bred goats
W. Pralomkarn, W. Ngampongsai, S. Choldumrongkul, S. Kochapakdee, A. Lawpetchara
Abstract
This paper presents results from a study of the effects of age and sex on body and carcass composition of different goat genotypes. A completely randomized 3 횞 3 횞 2 factorial design was used. Factors were genotype(Thai Native; TN, 50% TN 횞 50% Anglo-Nubian(AN) and 25% TN 횞 75% AN goats), age(206 8,349 9 and 428 8 days or 6.9, 11.6 and 14.3 months, respectively) and sex(male and female). It was shown that TN kids had significantly higher(p<0.05) hind percentage(7.9%) compared with 50% TN 횞 50% AN(7.2%) and 25% TN 횞 75% AN(7.1%) kids. TN kids had a significantly(p<0.05) higher heart percentage(0.44%) than that of 25% TN 횞 75% AN kids(0.38%). However, there was no significant difference in heart percentage between TN and 50% TN 횞 50% AN and between 50% TN 횞 50% AN and 25% TN 횞 75% AN kids. TN and 50% TN 횞 50% AN kids had significantly higher(p<0.05) carcass muscle content(63.1 and 63.7%, respectively) than did 25% TN 횞 75% AN kids(59.9%). Kids at 6.9 months of age had significantly higher percentages of hide, feet, intestinal tract, liver, heart, kidneys and carcass bone than those of kids at 11.6 and 14.3 months of age. There were no significant differences in these characteristics between kids at 11.6 and 14.3 months of age. However, kids at 11.6 and 14.3 months of age had significantly higher percentages of omental fat, dressing carcass, muscle, total fat (subcutaneous + intermuscular + kidney and pelvic fat), muscle to bone ratios (MBR), and muscle plus fat to bone ratios (MFBR) than those of kids at 6.9 months. Males had significantly higher gut contents, but lower percentages of liver, omental fat and heart. Prediction equations were developed relating empty body weight (EBW) to hot carcass weight and some dissectible carcass fractions.
Keywords: Thai Goats; Cross-bred Goats; Body Composition; Effect of Age; Effect of Sex


Editorial Office
Asian-Australasian Association of Animal Production Societies(AAAP)
Room 708 Sammo Sporex, 23, Sillim-ro 59-gil, Gwanak-gu, Seoul 08776, Korea   
TEL : +82-2-888-6558    FAX : +82-2-888-6559   
E-mail : jongkha@hotmail.com               

Copyright © 2019 by Asian-Australasian Journal of Animal Sciences. All rights reserved.

Close layer
prev next